If I target a unit with the Auto-divinatory Targeting Stratagem while the Protector Imperative is active for my army, in what order are the Ballistic Skill modifiers applied?
The Ballistic Skill characteristic of ranged weapons equipped by models in that unit is first changed to 3+ by the Stratagem, then improved by 1 by the Protector Imperative, for a final result of 2+ (assuming no other modifiers apply).